Gustay clemens



Patented Mar. 7, |899.

G. CLEMENS. Y MI'TER SAWING APPARATUS.

(Application led Jan. 20, 1898,)

No. 620,64l.

(No Model.)

UNITED STATES PATENT OFFICE.

GUSTAV CLEMENS, OF ARMEN, GERMANY.

MlTl-:R-sAwlNG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 620,641, dated March 7,1899.

Application filed January 20, 1898. Serial No. 667,373. (No model.)

To all whom, it 71u03/ concern:

Be it known that I, GUSTAV CLEMENS, a subject of the Emperor of Germany,residing at Barmen, in the Province of Rhenish Prussia, Germany, haveinvented certain new and useful Improvements in Miter-sawing Apparatus,of which the following,r is a full, clear, and exact specification, suchas will enable others skilled in the art of this manufacture to make anduse the same.

This invention relates to improvements in miter sawing and cuttingapparatus which are novel in the following particulars: The board has anadjustable rule in horizontal direction and an adjustable die to fastenthe work. The rule is provided with an exchangeable scale for cuttingthe work on the desired length. The saw is so guided that it can bemoved only in vertical direction, the guider being arranged for saws orknives of different breadth.

These improvements are represented in Figures l to 6 of the accompanyingdrawings.

Fig. l is a plan showing the complete apparatus.A Fig. 2 is a frontelevation of the same; Fig. 3, a view seen from left side of Fig. 2;Fig. 4:, a vertical section of the guidestandard; Fig. 5, a horizontalsection of the same, and Fig. 6 a longitudinal view at right angle toFig. 4:.

Like letters of reference designate corresponding parts in the drawings.

In said drawings,a indicates a plate of pref! erably cast-iron having asmooth-planed level and being provided with feet b.

c is a rule serving as support for the work. It is linked to the plate aby means of a bolt, the fulcrum of which lies, preferably, out of themiddle in the left part of the machine and as near as possible atl theplane in which the saw is moved. The rule c is adjustable on an arch d,which is graduated for a number of angles, and it has also a number ofapertures e, which engage a pin f, that is closely held therein by alever g, fitted to the rule and being inuenced by a coil-spring h. Whenthe lever g is disengaged of the pin f, the same slips out of itsaperture, which is done by means of a spring Zt laid around said pin.From this it will be understood that the rule can be easily placed inany angle to get the desired level for the work. If a small angle isrequired which is not shown in the scale and a corresponding aperture isnot provided for, the rule may be held in the desired miter by aset-screw Z, tted to the rule.

Now I have made some provision to secure the work in position during thesawing or cutting process. The plate ais for this purpose provided witha slot m, into which fits a screw form, is placed turnable over thescrew, so that it can be moved parallel to the rule b, and allows thework to be fastened between the rule and die and be closely held fast,for which operation has been hitherto used the hand of the workman.

Now to cut or saw the pieces on exactly the desired length I havearranged a rod p, which is screwed to the rule and provided with ascale. On the rod p is mounted a slide q, having a border q', againstwhich lies the end of the work. The slide can be adjusted at will andxed on its rod by a set-screw r.

The tool, which may be eitherasaw of any form, with or without frame, ora knife, is exactly guided in a right angle to the radius of thegraduated arch, which is effected by the standards s being constructedas illus trated in Figs. 4 to 6. This standard consists of a -tubularpiece s, having a flange by which it may be xed to the plate a. Itserves as guide for a tube t, which, like its guide, is provided withslots u. The tube t is tted with two vertical rollers w, being arrangedone beside another, which are journaled between screws y and are fittedwith a number of collars 5s, corresponding in height with each other.Between said collars the blade of the saw is guided, and as the rollersw are turnable no friction is produced and the saw or knife may be veryeasily moved. The tube if follows then the saw in vertical direction, asthe latter is provided with a U-shaped band lo', that surrounds the toplevel of the saw or knife and fits between the rollers, so that when thesaw is lifted the collars cause also a lifting of the tube t, and viceversa. The

saw must extend a little over the bottom of the tube t in order to cutthe piece through, and then no lining of wood, dac., is required intheplate. The tube-bottom resting upon said plate limits the downstroke ofthe saw, which in the lowest position enters a groove n. A die o, ofangle-iron or other .suitable IOO z in plate a. If a smaller saw isused, collars of different height are provided, which may be engaged bythe saw or knife, as shown in dotted lines, Fig. 6.

I am aware that sawing apparatus of named kind have .been made beforeIny invention, and I therefore do not claim such an apparatus broadly;but

What I do claim, and desire to secure by Letters Patent, is- Y Astandard for guiding the saw or knife consisting of a tube or like piecehaving vertically guided in it a tubular lining as t, said lining beingprovided with Vertical rollers as w that are fitted with collarsarranged in dif- I 5 In testimony whereof I have signed my 2o naine atthe end of this specification in the presence of two subscribingwitnesses.

GUSTAV CLEMENS. Witnesses:

'R. E. JAHN, OTTO KNIG.

